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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11357

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Shangxuetang MySQL video tutorial

Course Advanced 17659

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Band of Brothers front-end example display video tutorial

Course Advanced 11370

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

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Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't work. Below is the code snippet of the server database initialization connector in the application fromfastapiimportFastAPIimportmysql.connectorapp

2023-09-05 11:18:47

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactName. I think this might be a nested query. Nested queries run fine in SQLServer, but don't know how to implement it in MySQL. Limit query: Select*fromcustomerslimit

2023-09-05 14:46:42

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: .right-menu{...grid-auto-flow:columndense;...} If I remove the grid-auto-flow attribute, the overflow stops. However, the items are now stacked into multiple rows, which is not what I want. I also tried converting .ri

2023-09-05 15:18:28

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

2023-09-05 15:06:32

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in php any value has a unique string representation (such as the php code itself). I post this question to speed up the design process of this program. Some values are easily converted to strings: numbers, booleans, etc. Some are not easy: objects, arrays, resources. I think the transfer object and

2023-09-05 15:34:44

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How to customize touchpad gestures in Ubuntu 16.04 system?

Course Introduction：Linux supports multi-touch. Do you want to have various gestures like MacOS? I’ve never used a Mac, well I haven’t used /qiong either. Come DIY with me. Fusuma is an open source project hanging on github. Fusuma originates from Japanese and originally refers to this kind of door (see picture). Okay, without further ado, first, let’s list the touchpad gestures that come with Linux. One-finger click is not mentioned. Two-finger slide up and down, scroll up and down. Two-finger slide left and right, scroll left and right. Two-finger click is equivalent to a three-finger double-click with the right mouse button ( Clicking has no effect) Switch the window by clicking with four fingers, which is equivalent to super2, ctrl+Alt+T, open the terminal, and enter sudoapt-getinstalllibinput-tool

2024-01-07 comment 0 971

How to switch the network card on Huawei p50pro_How to switch the network card on Huawei p50pro

Course Introduction：1. Swipe down from the top right side of the phone screen to open the Control Center, and click the inverted triangle icon under Mobile Networks. 2. In the pop-up options, select the network card you want to switch and click OK. This article takes Huawei p50pro as an example and is applicable to the HarmonyOS2.0 system.

2024-05-06 comment 0 612

The specific method to hide the virtual navigation keys in vivoX20

Course Introduction：You can go to [Settings] ---- [System Navigation] ---- [Navigation Gesture Sequence and Style] on your phone and select the bottom item without icon (blank). At the same time, the vivoX20 screen fingerprint mobile phone system navigation can be switched at any time, with three styles and two methods, which can be matched as you like. There are three white navigation bars at the bottom of the vivoX20 screen. This is a newly added full-screen navigation gesture function of vivoX20. It automatically corresponds to the multitasking, home and return keys at the original position. You can slide up from the corresponding position to realize the corresponding button function. The navigation gestures are very easy to use once you get used to it, and you don’t have to go to the upper right corner of the screen to bring up the control center like iPhoneX. If you really are not used to this navigation gesture, you can also go to settings

2024-04-23 comment 0 867

Tutorial on adding zoom-in and zoom-out animation effects to premiere images

Course Introduction：1. Open the PR software, double-click the pop-up window in the sequence area, and select a picture. You can also select it from File->Import. 2. Place the imported pictures into the video track, as shown in the figure. If you feel that the length of the picture is too small, move the time slider below to lengthen the time line. Or just lengthen the image. (This version is cs6, the slider is below.). 3. Double-click the picture and you will see the picture above. Select the special effects console here. 4. Select the movement in the special effects and there is a scaling ratio. Move the mouse over it and hold it to zoom left or right. Or double-click the picture of the program sequence to zoom. 5. After the image is scaled to an appropriate ratio. Turn on the small triangle next to the zoom ratio for detailed settings. The alarm clock-like icon next to the small triangle is the switching animation. 6. in

2024-05-08 comment 0 937

Solution to the problem that the input method cannot be switched in win7

Course Introduction：1. Click the [Start Icon] in the lower left corner of the screen and select the [Control Panel] option in the pop-up dialog box and open it; as shown in the figure: 2. After entering the Control Panel page, set the viewing mode to large icons and drag the right Scroll bar, find the [Region and Language] option and open it; as shown in the figure: 3. After opening the Region and Language dialog box, click the [Keyboard and Language] option in the middle and open [Change Keyboard]; as shown in the figure: 4 , after entering the text service and input language dialog box, you can see the input method currently used. Next, we will do the switching settings, click [Advanced Key Settings] above; as shown in the figure: 5. Click under the Advanced Key Settings option [Change key sequence] below, enter this page and reset Ctrl+Shift under the switch keyboard layout option.

2024-03-26 comment 0 841

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